content: /*
   * Copyright 2016-present David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.rxjava3.processors;
  
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.reactivestreams.*;
  
  import io.reactivex.rxjava3.internal.subscriptions.SubscriptionHelper;
  import io.reactivex.rxjava3.processors.FlowableProcessor;
  
  final class FlowableProcessorWrap<T> extends FlowableProcessor<T> {
  
      final Processor<T, T> source;
  
      volatile boolean done;
      Throwable error;
  
      FlowableProcessorWrap(Processor<T, T> source) {
          this.source = source;
      }
  
      @Override
      public void onSubscribe(Subscription s) {
          source.onSubscribe(s);
      }
  
      @Override
      public void onNext(T t) {
          source.onNext(t);
      }
  
      @Override
      public void onError(Throwable t) {
          error = t;
          done = true;
          source.onError(t);
      }
  
      @Override
      public void onComplete() {
          done = true;
          source.onComplete();
      }
  
      @Override
      public boolean hasSubscribers() {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public boolean hasThrowable() {
          return done && error != null;
      }
  
      @Override
      public boolean hasComplete() {
          return done && error == null;
      }
  
      @Override
      public Throwable getThrowable() {
          return done ? error : null;
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super T> s) {
          source.subscribe(new WrapSubscriber(s));
      }
  
      final class WrapSubscriber extends AtomicBoolean implements Subscriber<T>, Subscription {
  
          private static final long serialVersionUID = -6891177704330298695L;
  
          final Subscriber<? super T> downstream;
  
          Subscription upstream;
  
          WrapSubscriber(Subscriber<? super T> downstream) {
              this.downstream = downstream;
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              this.upstream = s;
  
              downstream.onSubscribe(this);
          }
  
          @Override
          public void onNext(T t) {
              downstream.onNext(t);
          }
  
          @Override
          public void onError(Throwable t) {
              upstream = SubscriptionHelper.CANCELLED;
              downstream.onError(t);
          }
  
          @Override
          public void onComplete() {
              upstream = SubscriptionHelper.CANCELLED;
              downstream.onComplete();
          }
  
          @Override
          public void request(long n) {
              upstream.request(n);
          }
  
          @Override
          public void cancel() {
              if (compareAndSet(false, true)) {
                  upstream.cancel();
                  upstream = SubscriptionHelper.CANCELLED;
              }
          }
      }
  }
  